|Your board already supports 7.1 audio. |
Here's the thing though. Unless your headset requires a ton of power to drive, you probably won't benefit much from a sound card upgrade. Asus does a great job with onboard audio, especially on their high end Sabertooth and Rampage motherboards.
I use a Rampage IV Gene, and its shielded implementation of the Realtek ALC898 actually sounds better than the Sound Blaster X-Fi Titanium I was using in a previous computer.
I think the only real upgrade in audio quality would be a USB DAC.
message edited by jackbomb